package gateway

import (
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"
)

func TestGetDeviceInfo_ByCardNo_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{
			Code: 200,
			Msg:  "成功",
			Data: json.RawMessage(`{"imei":"123456789012345","onlineStatus":1,"signalLevel":25,"wifiSsid":"TestWiFi","wifiEnabled":1,"uploadSpeed":100,"downloadSpeed":500}`),
		}
		w.Header().Set("Content-Type", "application/json")
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	result, err := client.GetDeviceInfo(ctx, &DeviceInfoReq{
		CardNo: "898608070422D0010269",
	})

	if err != nil {
		t.Fatalf("GetDeviceInfo() error = %v", err)
	}

	if result.IMEI != "123456789012345" {
		t.Errorf("IMEI = %s, want 123456789012345", result.IMEI)
	}
	if result.OnlineStatus != 1 {
		t.Errorf("OnlineStatus = %d, want 1", result.OnlineStatus)
	}
	if result.SignalLevel != 25 {
		t.Errorf("SignalLevel = %d, want 25", result.SignalLevel)
	}
	if result.WiFiSSID != "TestWiFi" {
		t.Errorf("WiFiSSID = %s, want TestWiFi", result.WiFiSSID)
	}
}

func TestGetDeviceInfo_ByDeviceID_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{
			Code: 200,
			Msg:  "成功",
			Data: json.RawMessage(`{"imei":"123456789012345","onlineStatus":0,"signalLevel":0}`),
		}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	result, err := client.GetDeviceInfo(ctx, &DeviceInfoReq{
		DeviceID: "123456789012345",
	})

	if err != nil {
		t.Fatalf("GetDeviceInfo() error = %v", err)
	}

	if result.IMEI != "123456789012345" {
		t.Errorf("IMEI = %s, want 123456789012345", result.IMEI)
	}
	if result.OnlineStatus != 0 {
		t.Errorf("OnlineStatus = %d, want 0", result.OnlineStatus)
	}
}

func TestGetDeviceInfo_MissingParams(t *testing.T) {
	client := NewClient("https://test.example.com", "testAppID", "testSecret")
	ctx := context.Background()

	_, err := client.GetDeviceInfo(ctx, &DeviceInfoReq{})

	if err == nil {
		t.Fatal("GetDeviceInfo() expected validation error")
	}

	if !strings.Contains(err.Error(), "至少需要一个") {
		t.Errorf("error should contain '至少需要一个', got: %v", err)
	}
}

func TestGetDeviceInfo_InvalidResponse(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{
			Code: 200,
			Msg:  "成功",
			Data: json.RawMessage(`invalid json`),
		}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	_, err := client.GetDeviceInfo(ctx, &DeviceInfoReq{CardNo: "test"})
	if err == nil {
		t.Fatal("GetDeviceInfo() expected JSON parse error")
	}

	if !strings.Contains(err.Error(), "解析") {
		t.Errorf("error should contain '解析', got: %v", err)
	}
}

func TestGetSlotInfo_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{
			Code: 200,
			Msg:  "成功",
			Data: json.RawMessage(`{"imei":"123456789012345","slots":[{"slotNo":1,"iccid":"898608070422D0010269","cardStatus":"正常","isActive":1},{"slotNo":2,"iccid":"898608070422D0010270","cardStatus":"停机","isActive":0}]}`),
		}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	result, err := client.GetSlotInfo(ctx, &DeviceInfoReq{
		DeviceID: "123456789012345",
	})

	if err != nil {
		t.Fatalf("GetSlotInfo() error = %v", err)
	}

	if result.IMEI != "123456789012345" {
		t.Errorf("IMEI = %s, want 123456789012345", result.IMEI)
	}
	if len(result.Slots) != 2 {
		t.Errorf("len(Slots) = %d, want 2", len(result.Slots))
	}
	if result.Slots[0].SlotNo != 1 {
		t.Errorf("Slots[0].SlotNo = %d, want 1", result.Slots[0].SlotNo)
	}
	if result.Slots[0].ICCID != "898608070422D0010269" {
		t.Errorf("Slots[0].ICCID = %s, want 898608070422D0010269", result.Slots[0].ICCID)
	}
	if result.Slots[0].IsActive != 1 {
		t.Errorf("Slots[0].IsActive = %d, want 1", result.Slots[0].IsActive)
	}
}

func TestGetSlotInfo_MissingParams(t *testing.T) {
	client := NewClient("https://test.example.com", "testAppID", "testSecret")
	ctx := context.Background()

	_, err := client.GetSlotInfo(ctx, &DeviceInfoReq{})

	if err == nil {
		t.Fatal("GetSlotInfo() expected validation error")
	}

	if !strings.Contains(err.Error(), "至少需要一个") {
		t.Errorf("error should contain '至少需要一个', got: %v", err)
	}
}

func TestSetSpeedLimit_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SetSpeedLimit(ctx, &SpeedLimitReq{
		DeviceID:      "123456789012345",
		UploadSpeed:   100,
		DownloadSpeed: 500,
	})

	if err != nil {
		t.Fatalf("SetSpeedLimit() error = %v", err)
	}
}

func TestSetSpeedLimit_WithExtend(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SetSpeedLimit(ctx, &SpeedLimitReq{
		DeviceID:      "123456789012345",
		UploadSpeed:   100,
		DownloadSpeed: 500,
		Extend:        "test-extend",
	})

	if err != nil {
		t.Fatalf("SetSpeedLimit() error = %v", err)
	}
}

func TestSetSpeedLimit_BusinessError(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 500, Msg: "设置失败"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SetSpeedLimit(ctx, &SpeedLimitReq{
		DeviceID:      "123456789012345",
		UploadSpeed:   100,
		DownloadSpeed: 500,
	})

	if err == nil {
		t.Fatal("SetSpeedLimit() expected business error")
	}

	if !strings.Contains(err.Error(), "业务错误") {
		t.Errorf("error should contain '业务错误', got: %v", err)
	}
}

func TestSetWiFi_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SetWiFi(ctx, &WiFiReq{
		DeviceID: "123456789012345",
		SSID:     "TestWiFi",
		Password: "password123",
		Enabled:  1,
	})

	if err != nil {
		t.Fatalf("SetWiFi() error = %v", err)
	}
}

func TestSetWiFi_WithExtend(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SetWiFi(ctx, &WiFiReq{
		DeviceID: "123456789012345",
		SSID:     "TestWiFi",
		Password: "password123",
		Enabled:  0,
		Extend:   "test-extend",
	})

	if err != nil {
		t.Fatalf("SetWiFi() error = %v", err)
	}
}

func TestSwitchCard_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SwitchCard(ctx, &SwitchCardReq{
		DeviceID:    "123456789012345",
		TargetICCID: "898608070422D0010270",
	})

	if err != nil {
		t.Fatalf("SwitchCard() error = %v", err)
	}
}

func TestSwitchCard_BusinessError(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 404, Msg: "目标卡不存在"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.SwitchCard(ctx, &SwitchCardReq{
		DeviceID:    "123456789012345",
		TargetICCID: "invalid",
	})

	if err == nil {
		t.Fatal("SwitchCard() expected business error")
	}
}

func TestResetDevice_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.ResetDevice(ctx, &DeviceOperationReq{
		DeviceID: "123456789012345",
	})

	if err != nil {
		t.Fatalf("ResetDevice() error = %v", err)
	}
}

func TestResetDevice_WithExtend(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.ResetDevice(ctx, &DeviceOperationReq{
		DeviceID: "123456789012345",
		Extend:   "test-extend",
	})

	if err != nil {
		t.Fatalf("ResetDevice() error = %v", err)
	}
}

func TestRebootDevice_Success(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 200, Msg: "成功"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.RebootDevice(ctx, &DeviceOperationReq{
		DeviceID: "123456789012345",
	})

	if err != nil {
		t.Fatalf("RebootDevice() error = %v", err)
	}
}

func TestRebootDevice_BusinessError(t *testing.T) {
	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		resp := GatewayResponse{Code: 500, Msg: "设备离线"}
		json.NewEncoder(w).Encode(resp)
	}))
	defer server.Close()

	client := NewClient(server.URL, "testAppID", "testSecret")
	ctx := context.Background()

	err := client.RebootDevice(ctx, &DeviceOperationReq{
		DeviceID: "123456789012345",
	})

	if err == nil {
		t.Fatal("RebootDevice() expected business error")
	}

	if !strings.Contains(err.Error(), "业务错误") {
		t.Errorf("error should contain '业务错误', got: %v", err)
	}
}